<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" lang="zh-CN">
<head>
  <meta name="verify-v1" content="P4T6fFCiPVxqMWZ2eztyXVzMHlnwD0wLQOq6LBHN5Y8=" />
  <title>经过改善优化的Alert弹出提示效果</title>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <style type="text/css">
    *{
      margin:0;padding:0;
    }
  </style>
</head>
<body>
<div class="cecmbody" id="cecmpolicy">
  <div class="leftClass">
    <p>测试</p><p>测试</p>
    <p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p>
    <p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p>
    <input type="button" value="点击这里" onclick="sAlert('测试效果');" />

  </div>
  <div class="rightClass">
  </div>
</div>
<script type="text/javascript" language="javascript">
  //Author:Daviv
  //Blog:http://blog.163.com/jxdawei
  //Date:2006-10-27
  //Email:jxdawei@gmail.com
  function sAlert(str){
    var msgw,msgh,bordercolor;
    msgw=400;//提示窗口的宽度
    msgh=100;//提示窗口的高度
    titleheight=25 //提示窗口标题高度
    bordercolor="#336699";//提示窗口的边框颜色
    titlecolor="#99CCFF";//提示窗口的标题颜色

    var sWidth,sHeight;
    sWidth=document.body.offsetWidth;
    sHeight=screen.height;
    var bgObj=document.createElement("div");
    bgObj.setAttribute('id','bgDiv');
    bgObj.style.position="absolute";
    bgObj.style.top="0";
    bgObj.style.background="#777";
    bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75";
    bgObj.style.opacity="0.6";
    bgObj.style.left="0";
    bgObj.style.width=sWidth + "px";
    bgObj.style.height=sHeight + "px";
    bgObj.style.zIndex = "10000";
    document.body.appendChild(bgObj);

    var msgObj=document.createElement("div")
    msgObj.setAttribute("id","msgDiv");
    msgObj.setAttribute("align","center");
    msgObj.style.background="white";
    msgObj.style.border="1px solid " + bordercolor;
    msgObj.style.position = "absolute";
    msgObj.style.left = "50%";
    msgObj.style.top = "50%";
    msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif";
    msgObj.style.marginLeft = "-225px" ;
    msgObj.style.marginTop = -75+document.documentElement.scrollTop+"px";
    msgObj.style.width = msgw + "px";
    msgObj.style.height =msgh + "px";
    msgObj.style.textAlign = "center";
    msgObj.style.lineHeight ="25px";
    msgObj.style.zIndex = "10001";

    var title=document.createElement("h4");
    title.setAttribute("id","msgTitle");
    title.setAttribute("align","right");
    title.style.margin="0";
    title.style.padding="3px";
    title.style.background=bordercolor;
    title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);";
    title.style.opacity="0.75";
    title.style.border="1px solid " + bordercolor;
    title.style.height="18px";
    title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif";
    title.style.color="white";
    title.style.cursor="pointer";
    title.innerHTML="关闭";
    title.onclick=function(){
      document.body.removeChild(bgObj);
      document.getElementById("msgDiv").removeChild(title);
      document.body.removeChild(msgObj);
    }
    document.body.appendChild(msgObj);
    document.getElementById("msgDiv").appendChild(title);
    var txt=document.createElement("p");
    txt.style.margin="1em 0"
    txt.setAttribute("id","msgTxt");
    txt.innerHTML=str;
    document.getElementById("msgDiv").appendChild(txt);
  }
</script>
</body>
</html>